From 216999e552e7f73e63c7bcc88b8ce9c179bbdbe2 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 25 Jun 2023 13:46:53 +0300
Subject: [PATCH] Avoid -Wsign-conversion warning in checked_delete.hpp

---
 include/boost/core/checked_delete.hpp | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/include/boost/core/checked_delete.hpp b/include/boost/core/checked_delete.hpp
index 6af5c14..b74a43a 100644
--- a/include/boost/core/checked_delete.hpp
+++ b/include/boost/core/checked_delete.hpp
@@ -30,16 +30,33 @@ namespace boost
 
 template<class T> inline void checked_delete(T * x) BOOST_NOEXCEPT
 {
-    // intentionally complex - simplification causes regressions
-    typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
+#if defined(__cpp_static_assert) && __cpp_static_assert >= 200410L
+
+    static_assert( sizeof(T) != 0, "Type must be complete" );
+
+#else
+
+    typedef char type_must_be_complete[ sizeof(T) ];
     (void) sizeof(type_must_be_complete);
+
+#endif
+
     delete x;
 }
 
 template<class T> inline void checked_array_delete(T * x) BOOST_NOEXCEPT
 {
-    typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
+#if defined(__cpp_static_assert) && __cpp_static_assert >= 200410L
+
+    static_assert( sizeof(T) != 0, "Type must be complete" );
+
+#else
+
+    typedef char type_must_be_complete[ sizeof(T) ];
     (void) sizeof(type_must_be_complete);
+
+#endif
+
     delete [] x;
 }